//项目的根组件

//App -> index.js -> public/index.html(root)
const isLogin = false

function App() {
  return (
    <div className="App">
      {/* 逻辑与 && */}
      { isLogin && <span>this is span</span> }
      { isLogin ? <span>jack</span> : <span>未登录</span> }
    </div>
  );
}

export default App;
